Installation and connections to be performed by others; fixing, connection and sealing material to be provided by others

The beam is fitted with four hanging brackets to fix it to the ceiling using threaded rods, metal hangers or wires

Heat exchangers are fitted with water flow and water return connections at the narrow side

Hanging brackets can be positioned facing inwards or outwards

Principle of operation – PKV

Nomenclature

tWV [C°]

Water flow temperature – cooling/heating

tR [C°]

Room temperature

tAN [C°]

Secondary air intake temperature

Qtot [W]

Thermal output – total

QW [W]

Thermal output – water side, cooling/heating

VW [l/h]

Water flow rate – cooling/heating

∆tW [K]

Temperature difference – water

∆pW [kPa]

Water-side pressure loss

∆tRWV = tWV - tR [K]

Difference between water flow temperature and room temperature

∆tWm-Ref [K]

Difference between mean water temperature and reference temperature

LN [mm]

Nominal length

Convection

Passive chilled beams remove the heat from the room air and transfer it via a heat exchanger to the water (transport medium). More than 90 % of the heat are transferred through convection. As the air passes over the surfaces of the heat exchanger, its temperature decreases while its density increases as a consequence, hence accelerating the downward airflow. The air flows straight down from the top to the bottom of the unit. This further increases the downward airflow (stack effect) and hence the cooling output.

Heat exchanger

The maximum water-side operating pressure for all heat exchangers is 6 bar.

The maximum water flow temperature (heating circuit) for all heat exchangers is 75 °C; if flexible hoses are used, the water flow temperature should not exceed 55 °C. Units for other pressures and temperatures are available on request.

The water flow temperature (cooling circuit) should be at least 16 °C such that it does not permanently fall below the dew point. For units with a condensate drip tray the water flow temperature may be reduced to 15 °C.

Heat exchanger as 2-pipe system

Air-water systems with a 2-pipe heat exchanger may be used for either heating or cooling. In changeover mode it is possible to use all units within a water circuit exclusively for cooling in summer and exclusively for heating in winter.

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Your message is send and will be processed shortly.Our department for Service-Requests will contact you asap.For general question regarding products or services you can also call:Tel.: +7 495 221-5161 | Fax: +7 495 221-5171